1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering, Kay Sievers
7 Copyright 2015 Zbigniew Jędrzejewski-Szmek
9 systemd is free software; you can redistribute it and/or modify it
10 under the terms of the GNU Lesser General Public License as published by
11 the Free Software Foundation; either version 2.1 of the License, or
12 (at your option) any later version.
14 systemd is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
19 You should have received a copy of the GNU Lesser General Public License
20 along with systemd; If not, see <http://www.gnu.org/licenses/>.
38 #include <sys/xattr.h>
46 #include "path-util.h"
50 #include "conf-files.h"
51 #include "capability.h"
52 #include "specifier.h"
56 #include "selinux-util.h"
57 #include "btrfs-util.h"
59 #include "formats-util.h"
61 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
62 * them in the file system. This is intended to be used to create
63 * properly owned directories beneath /tmp, /var/tmp, /run, which are
64 * volatile and hence need to be recreated on bootup. */
66 typedef enum ItemType
{
67 /* These ones take file names */
70 CREATE_DIRECTORY
= 'd',
71 TRUNCATE_DIRECTORY
= 'D',
72 CREATE_SUBVOLUME
= 'v',
75 CREATE_CHAR_DEVICE
= 'c',
76 CREATE_BLOCK_DEVICE
= 'b',
79 /* These ones take globs */
82 RECURSIVE_SET_XATTR
= 'T',
84 RECURSIVE_SET_ACL
= 'A',
86 RECURSIVE_SET_ATTRIBUTE
= 'H',
88 IGNORE_DIRECTORY_PATH
= 'X',
90 RECURSIVE_REMOVE_PATH
= 'R',
92 RECURSIVE_RELABEL_PATH
= 'Z',
93 ADJUST_MODE
= 'm', /* legacy, 'z' is identical to this */
112 unsigned attribute_value
;
113 unsigned attribute_mask
;
120 bool attribute_set
:1;
122 bool keep_first_level
:1;
129 typedef struct ItemArray
{
135 static bool arg_create
= false;
136 static bool arg_clean
= false;
137 static bool arg_remove
= false;
138 static bool arg_boot
= false;
140 static char **arg_include_prefixes
= NULL
;
141 static char **arg_exclude_prefixes
= NULL
;
142 static char *arg_root
= NULL
;
144 static const char conf_file_dirs
[] = CONF_DIRS_NULSTR("tmpfiles");
146 #define MAX_DEPTH 256
148 static OrderedHashmap
*items
= NULL
, *globs
= NULL
;
149 static Set
*unix_sockets
= NULL
;
151 static const Specifier specifier_table
[] = {
152 { 'm', specifier_machine_id
, NULL
},
153 { 'b', specifier_boot_id
, NULL
},
154 { 'H', specifier_host_name
, NULL
},
155 { 'v', specifier_kernel_release
, NULL
},
159 static bool needs_glob(ItemType t
) {
163 IGNORE_DIRECTORY_PATH
,
165 RECURSIVE_REMOVE_PATH
,
168 RECURSIVE_RELABEL_PATH
,
174 RECURSIVE_SET_ATTRIBUTE
);
177 static bool takes_ownership(ItemType t
) {
191 IGNORE_DIRECTORY_PATH
,
193 RECURSIVE_REMOVE_PATH
);
196 static struct Item
* find_glob(OrderedHashmap
*h
, const char *match
) {
200 ORDERED_HASHMAP_FOREACH(j
, h
, i
) {
203 for (n
= 0; n
< j
->count
; n
++) {
204 Item
*item
= j
->items
+ n
;
206 if (fnmatch(item
->path
, match
, FNM_PATHNAME
|FNM_PERIOD
) == 0)
214 static void load_unix_sockets(void) {
215 _cleanup_fclose_
FILE *f
= NULL
;
221 /* We maintain a cache of the sockets we found in
222 * /proc/net/unix to speed things up a little. */
224 unix_sockets
= set_new(&string_hash_ops
);
228 f
= fopen("/proc/net/unix", "re");
233 if (!fgets(line
, sizeof(line
), f
))
240 if (!fgets(line
, sizeof(line
), f
))
245 p
= strchr(line
, ':');
253 p
+= strspn(p
, WHITESPACE
);
254 p
+= strcspn(p
, WHITESPACE
); /* skip one more word */
255 p
+= strspn(p
, WHITESPACE
);
264 path_kill_slashes(s
);
266 k
= set_consume(unix_sockets
, s
);
267 if (k
< 0 && k
!= -EEXIST
)
274 set_free_free(unix_sockets
);
278 static bool unix_socket_alive(const char *fn
) {
284 return !!set_get(unix_sockets
, (char*) fn
);
286 /* We don't know, so assume yes */
290 static int dir_is_mount_point(DIR *d
, const char *subdir
) {
292 union file_handle_union h
= FILE_HANDLE_INIT
;
293 int mount_id_parent
, mount_id
;
296 r_p
= name_to_handle_at(dirfd(d
), ".", &h
.handle
, &mount_id_parent
, 0);
300 h
.handle
.handle_bytes
= MAX_HANDLE_SZ
;
301 r
= name_to_handle_at(dirfd(d
), subdir
, &h
.handle
, &mount_id
, 0);
305 /* got no handle; make no assumptions, return error */
306 if (r_p
< 0 && r
< 0)
309 /* got both handles; if they differ, it is a mount point */
310 if (r_p
>= 0 && r
>= 0)
311 return mount_id_parent
!= mount_id
;
313 /* got only one handle; assume different mount points if one
314 * of both queries was not supported by the filesystem */
315 if (r_p
== -ENOSYS
|| r_p
== -EOPNOTSUPP
|| r
== -ENOSYS
|| r
== -EOPNOTSUPP
)
324 static DIR* xopendirat_nomod(int dirfd
, const char *path
) {
327 dir
= xopendirat(dirfd
, path
, O_NOFOLLOW
|O_NOATIME
);
331 log_debug_errno(errno
, "Cannot open %sdirectory \"%s\": %m", dirfd
== AT_FDCWD
? "" : "sub", path
);
335 dir
= xopendirat(dirfd
, path
, O_NOFOLLOW
);
337 log_debug_errno(errno
, "Cannot open %sdirectory \"%s\": %m", dirfd
== AT_FDCWD
? "" : "sub", path
);
342 static DIR* opendir_nomod(const char *path
) {
343 return xopendirat_nomod(AT_FDCWD
, path
);
346 static int dir_cleanup(
350 const struct stat
*ds
,
355 bool keep_this_level
) {
358 struct timespec times
[2];
359 bool deleted
= false;
362 while ((dent
= readdir(d
))) {
365 _cleanup_free_
char *sub_path
= NULL
;
367 if (STR_IN_SET(dent
->d_name
, ".", ".."))
370 if (fstatat(dirfd(d
), dent
->d_name
, &s
, AT_SYMLINK_NOFOLLOW
) < 0) {
374 /* FUSE, NFS mounts, SELinux might return EACCES */
376 log_debug_errno(errno
, "stat(%s/%s) failed: %m", p
, dent
->d_name
);
378 log_error_errno(errno
, "stat(%s/%s) failed: %m", p
, dent
->d_name
);
383 /* Stay on the same filesystem */
384 if (s
.st_dev
!= rootdev
) {
385 log_debug("Ignoring \"%s/%s\": different filesystem.", p
, dent
->d_name
);
389 /* Try to detect bind mounts of the same filesystem instance; they
390 * do not differ in device major/minors. This type of query is not
391 * supported on all kernels or filesystem types though. */
392 if (S_ISDIR(s
.st_mode
) && dir_is_mount_point(d
, dent
->d_name
) > 0) {
393 log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.",
398 /* Do not delete read-only files owned by root */
399 if (s
.st_uid
== 0 && !(s
.st_mode
& S_IWUSR
)) {
400 log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p
, dent
->d_name
);
404 sub_path
= strjoin(p
, "/", dent
->d_name
, NULL
);
410 /* Is there an item configured for this path? */
411 if (ordered_hashmap_get(items
, sub_path
)) {
412 log_debug("Ignoring \"%s\": a separate entry exists.", sub_path
);
416 if (find_glob(globs
, sub_path
)) {
417 log_debug("Ignoring \"%s\": a separate glob exists.", sub_path
);
421 if (S_ISDIR(s
.st_mode
)) {
424 streq(dent
->d_name
, "lost+found") &&
426 log_debug("Ignoring \"%s\".", sub_path
);
431 log_warning("Reached max depth on \"%s\".", sub_path
);
433 _cleanup_closedir_
DIR *sub_dir
;
436 sub_dir
= xopendirat_nomod(dirfd(d
), dent
->d_name
);
439 r
= log_error_errno(errno
, "opendir(%s) failed: %m", sub_path
);
444 q
= dir_cleanup(i
, sub_path
, sub_dir
, &s
, cutoff
, rootdev
, false, maxdepth
-1, false);
449 /* Note: if you are wondering why we don't
450 * support the sticky bit for excluding
451 * directories from cleaning like we do it for
452 * other file system objects: well, the sticky
453 * bit already has a meaning for directories,
454 * so we don't want to overload that. */
456 if (keep_this_level
) {
457 log_debug("Keeping \"%s\".", sub_path
);
461 /* Ignore ctime, we change it when deleting */
462 age
= timespec_load(&s
.st_mtim
);
464 char a
[FORMAT_TIMESTAMP_MAX
];
465 /* Follows spelling in stat(1). */
466 log_debug("Directory \"%s\": modify time %s is too new.",
468 format_timestamp_us(a
, sizeof(a
), age
));
472 age
= timespec_load(&s
.st_atim
);
474 char a
[FORMAT_TIMESTAMP_MAX
];
475 log_debug("Directory \"%s\": access time %s is too new.",
477 format_timestamp_us(a
, sizeof(a
), age
));
481 log_debug("Removing directory \"%s\".", sub_path
);
482 if (unlinkat(dirfd(d
), dent
->d_name
, AT_REMOVEDIR
) < 0)
483 if (errno
!= ENOENT
&& errno
!= ENOTEMPTY
) {
484 log_error_errno(errno
, "rmdir(%s): %m", sub_path
);
489 /* Skip files for which the sticky bit is
490 * set. These are semantics we define, and are
491 * unknown elsewhere. See XDG_RUNTIME_DIR
492 * specification for details. */
493 if (s
.st_mode
& S_ISVTX
) {
494 log_debug("Skipping \"%s\": sticky bit set.", sub_path
);
498 if (mountpoint
&& S_ISREG(s
.st_mode
))
499 if (s
.st_uid
== 0 && STR_IN_SET(dent
->d_name
,
503 log_debug("Skipping \"%s\".", sub_path
);
507 /* Ignore sockets that are listed in /proc/net/unix */
508 if (S_ISSOCK(s
.st_mode
) && unix_socket_alive(sub_path
)) {
509 log_debug("Skipping \"%s\": live socket.", sub_path
);
513 /* Ignore device nodes */
514 if (S_ISCHR(s
.st_mode
) || S_ISBLK(s
.st_mode
)) {
515 log_debug("Skipping \"%s\": a device.", sub_path
);
519 /* Keep files on this level around if this is
521 if (keep_this_level
) {
522 log_debug("Keeping \"%s\".", sub_path
);
526 age
= timespec_load(&s
.st_mtim
);
528 char a
[FORMAT_TIMESTAMP_MAX
];
529 /* Follows spelling in stat(1). */
530 log_debug("File \"%s\": modify time %s is too new.",
532 format_timestamp_us(a
, sizeof(a
), age
));
536 age
= timespec_load(&s
.st_atim
);
538 char a
[FORMAT_TIMESTAMP_MAX
];
539 log_debug("File \"%s\": access time %s is too new.",
541 format_timestamp_us(a
, sizeof(a
), age
));
545 age
= timespec_load(&s
.st_ctim
);
547 char a
[FORMAT_TIMESTAMP_MAX
];
548 log_debug("File \"%s\": change time %s is too new.",
550 format_timestamp_us(a
, sizeof(a
), age
));
554 log_debug("unlink \"%s\"", sub_path
);
556 if (unlinkat(dirfd(d
), dent
->d_name
, 0) < 0)
558 r
= log_error_errno(errno
, "unlink(%s): %m", sub_path
);
567 char a
[FORMAT_TIMESTAMP_MAX
], b
[FORMAT_TIMESTAMP_MAX
];
569 /* Restore original directory timestamps */
570 times
[0] = ds
->st_atim
;
571 times
[1] = ds
->st_mtim
;
573 age1
= timespec_load(&ds
->st_atim
);
574 age2
= timespec_load(&ds
->st_mtim
);
575 log_debug("Restoring access and modification time on \"%s\": %s, %s",
577 format_timestamp_us(a
, sizeof(a
), age1
),
578 format_timestamp_us(b
, sizeof(b
), age2
));
579 if (futimens(dirfd(d
), times
) < 0)
580 log_error_errno(errno
, "utimensat(%s): %m", p
);
586 static int path_set_perms(Item
*i
, const char *path
) {
587 _cleanup_close_
int fd
= -1;
593 /* We open the file with O_PATH here, to make the operation
594 * somewhat atomic. Also there's unfortunately no fchmodat()
595 * with AT_SYMLINK_NOFOLLOW, hence we emulate it here via
598 fd
= open(path
, O_RDONLY
|O_NOFOLLOW
|O_CLOEXEC
|O_PATH
|O_NOATIME
);
600 return log_error_errno(errno
, "Adjusting owner and mode for %s failed: %m", path
);
602 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
603 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
605 if (S_ISLNK(st
.st_mode
))
606 log_debug("Skipping mode an owner fix for symlink %s.", path
);
608 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
609 xsprintf(fn
, "/proc/self/fd/%i", fd
);
611 /* not using i->path directly because it may be a glob */
616 if (!(st
.st_mode
& 0111))
618 if (!(st
.st_mode
& 0222))
620 if (!(st
.st_mode
& 0444))
622 if (!S_ISDIR(st
.st_mode
))
623 m
&= ~07000; /* remove sticky/sgid/suid bit, unless directory */
626 if (m
== (st
.st_mode
& 07777))
627 log_debug("\"%s\" has right mode %o", path
, st
.st_mode
);
629 log_debug("chmod \"%s\" to mode %o", path
, m
);
630 if (chmod(fn
, m
) < 0)
631 return log_error_errno(errno
, "chmod(%s) failed: %m", path
);
635 if ((i
->uid
!= st
.st_uid
|| i
->gid
!= st
.st_gid
) &&
636 (i
->uid_set
|| i
->gid_set
)) {
637 log_debug("chown \"%s\" to "UID_FMT
"."GID_FMT
,
639 i
->uid_set
? i
->uid
: UID_INVALID
,
640 i
->gid_set
? i
->gid
: GID_INVALID
);
642 i
->uid_set
? i
->uid
: UID_INVALID
,
643 i
->gid_set
? i
->gid
: GID_INVALID
) < 0)
644 return log_error_errno(errno
, "chown(%s) failed: %m", path
);
650 return label_fix(path
, false, false);
653 static int parse_xattrs_from_arg(Item
*i
) {
663 _cleanup_free_
char *name
= NULL
, *value
= NULL
, *xattr
= NULL
, *xattr_replaced
= NULL
;
665 r
= unquote_first_word(&p
, &xattr
, UNQUOTE_CUNESCAPE
);
667 log_warning_errno(r
, "Failed to parse extended attribute '%s', ignoring: %m", p
);
671 r
= specifier_printf(xattr
, specifier_table
, NULL
, &xattr_replaced
);
673 return log_error_errno(r
, "Failed to replace specifiers in extended attribute '%s': %m", xattr
);
675 r
= split_pair(xattr_replaced
, "=", &name
, &value
);
677 log_warning_errno(r
, "Failed to parse extended attribute, ignoring: %s", xattr
);
681 if (isempty(name
) || isempty(value
)) {
682 log_warning("Malformed extended attribute found, ignoring: %s", xattr
);
686 if (strv_push_pair(&i
->xattrs
, name
, value
) < 0)
695 static int path_set_xattrs(Item
*i
, const char *path
) {
696 char **name
, **value
;
701 STRV_FOREACH_PAIR(name
, value
, i
->xattrs
) {
705 log_debug("Setting extended attribute '%s=%s' on %s.", *name
, *value
, path
);
706 if (lsetxattr(path
, *name
, *value
, n
, 0) < 0) {
707 log_error("Setting extended attribute %s=%s on %s failed: %m", *name
, *value
, path
);
714 static int parse_acls_from_arg(Item
*item
) {
720 /* If force (= modify) is set, we will not modify the acl
721 * afterwards, so the mask can be added now if necessary. */
723 r
= parse_acl(item
->argument
, &item
->acl_access
, &item
->acl_default
, !item
->force
);
725 log_warning_errno(r
, "Failed to parse ACL \"%s\": %m. Ignoring", item
->argument
);
727 log_warning_errno(ENOSYS
, "ACLs are not supported. Ignoring");
734 static int path_set_acl(const char *path
, const char *pretty
, acl_type_t type
, acl_t acl
, bool modify
) {
735 _cleanup_(acl_free_charpp
) char *t
= NULL
;
736 _cleanup_(acl_freep
) acl_t dup
= NULL
;
739 /* Returns 0 for success, positive error if already warned,
740 * negative error otherwise. */
743 r
= acls_for_file(path
, type
, acl
, &dup
);
747 r
= calc_acl_mask_if_needed(&dup
);
755 /* the mask was already added earlier if needed */
758 r
= add_base_acls_if_needed(&dup
, path
);
762 t
= acl_to_any_text(dup
, NULL
, ',', TEXT_ABBREVIATE
);
763 log_debug("Setting %s ACL %s on %s.",
764 type
== ACL_TYPE_ACCESS
? "access" : "default",
767 r
= acl_set_file(path
, type
, dup
);
769 /* Return positive to indicate we already warned */
770 return -log_error_errno(errno
,
771 "Setting %s ACL \"%s\" on %s failed: %m",
772 type
== ACL_TYPE_ACCESS
? "access" : "default",
779 static int path_set_acls(Item
*item
, const char *path
) {
782 char fn
[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
783 _cleanup_close_
int fd
= -1;
789 fd
= open(path
, O_RDONLY
|O_NOFOLLOW
|O_CLOEXEC
|O_PATH
|O_NOATIME
);
791 return log_error_errno(errno
, "Adjusting ACL of %s failed: %m", path
);
793 if (fstatat(fd
, "", &st
, AT_EMPTY_PATH
) < 0)
794 return log_error_errno(errno
, "Failed to fstat() file %s: %m", path
);
796 if (S_ISLNK(st
.st_mode
)) {
797 log_debug("Skipping ACL fix for symlink %s.", path
);
801 xsprintf(fn
, "/proc/self/fd/%i", fd
);
803 if (item
->acl_access
)
804 r
= path_set_acl(fn
, path
, ACL_TYPE_ACCESS
, item
->acl_access
, item
->force
);
806 if (r
== 0 && item
->acl_default
)
807 r
= path_set_acl(fn
, path
, ACL_TYPE_DEFAULT
, item
->acl_default
, item
->force
);
810 return -r
; /* already warned */
811 else if (r
== -EOPNOTSUPP
) {
812 log_debug_errno(r
, "ACLs not supported by file system at %s", path
);
815 log_error_errno(r
, "ACL operation on \"%s\" failed: %m", path
);
820 #define ATTRIBUTES_ALL \
829 FS_JOURNAL_DATA_FL | \
836 static int parse_attribute_from_arg(Item
*item
) {
838 static const struct {
842 { 'A', FS_NOATIME_FL
}, /* do not update atime */
843 { 'S', FS_SYNC_FL
}, /* Synchronous updates */
844 { 'D', FS_DIRSYNC_FL
}, /* dirsync behaviour (directories only) */
845 { 'a', FS_APPEND_FL
}, /* writes to file may only append */
846 { 'c', FS_COMPR_FL
}, /* Compress file */
847 { 'd', FS_NODUMP_FL
}, /* do not dump file */
848 { 'e', FS_EXTENT_FL
}, /* Top of directory hierarchies*/
849 { 'i', FS_IMMUTABLE_FL
}, /* Immutable file */
850 { 'j', FS_JOURNAL_DATA_FL
}, /* Reserved for ext3 */
851 { 's', FS_SECRM_FL
}, /* Secure deletion */
852 { 'u', FS_UNRM_FL
}, /* Undelete */
853 { 't', FS_NOTAIL_FL
}, /* file tail should not be merged */
854 { 'T', FS_TOPDIR_FL
}, /* Top of directory hierarchies*/
855 { 'C', FS_NOCOW_FL
}, /* Do not cow file */
864 unsigned value
= 0, mask
= 0;
874 } else if (*p
== '-') {
877 } else if (*p
== '=') {
883 if (isempty(p
) && mode
!= MODE_SET
) {
884 log_error("Setting file attribute on '%s' needs an attribute specification.", item
->path
);
888 for (; p
&& *p
; p
++) {
891 for (i
= 0; i
< ELEMENTSOF(attributes
); i
++)
892 if (*p
== attributes
[i
].character
)
895 if (i
>= ELEMENTSOF(attributes
)) {
896 log_error("Unknown file attribute '%c' on '%s'.", *p
, item
->path
);
900 v
= attributes
[i
].value
;
902 if (mode
== MODE_ADD
|| mode
== MODE_SET
)
910 if (mode
== MODE_SET
)
911 mask
|= ATTRIBUTES_ALL
;
915 item
->attribute_mask
= mask
;
916 item
->attribute_value
= value
;
917 item
->attribute_set
= true;
922 static int path_set_attribute(Item
*item
, const char *path
) {
923 _cleanup_close_
int fd
= -1;
928 if (!item
->attribute_set
|| item
->attribute_mask
== 0)
931 fd
= open(path
, O_RDONLY
|O_NONBLOCK
|O_CLOEXEC
|O_NOATIME
|O_NOFOLLOW
);
934 return log_error_errno(errno
, "Skipping file attributes adjustment on symlink %s.", path
);
936 return log_error_errno(errno
, "Cannot open '%s': %m", path
);
939 if (fstat(fd
, &st
) < 0)
940 return log_error_errno(errno
, "Cannot stat '%s': %m", path
);
942 /* Issuing the file attribute ioctls on device nodes is not
943 * safe, as that will be delivered to the drivers, not the
944 * file system containing the device node. */
945 if (!S_ISREG(st
.st_mode
) && !S_ISDIR(st
.st_mode
)) {
946 log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path
);
950 f
= item
->attribute_value
& item
->attribute_mask
;
952 /* Mask away directory-specific flags */
953 if (!S_ISDIR(st
.st_mode
))
956 r
= chattr_fd(fd
, f
, item
->attribute_mask
);
958 return log_error_errno(r
,
959 "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
960 path
, item
->attribute_value
, item
->attribute_mask
);
965 static int write_one_file(Item
*i
, const char *path
) {
966 _cleanup_close_
int fd
= -1;
973 flags
= i
->type
== CREATE_FILE
? O_CREAT
|O_APPEND
|O_NOFOLLOW
:
974 i
->type
== TRUNCATE_FILE
? O_CREAT
|O_TRUNC
|O_NOFOLLOW
: 0;
976 RUN_WITH_UMASK(0000) {
977 mac_selinux_create_file_prepare(path
, S_IFREG
);
978 fd
= open(path
, flags
|O_NDELAY
|O_CLOEXEC
|O_WRONLY
|O_NOCTTY
, i
->mode
);
979 mac_selinux_create_file_clear();
983 if (i
->type
== WRITE_FILE
&& errno
== ENOENT
) {
984 log_debug_errno(errno
, "Not writing \"%s\": %m", path
);
989 if (!i
->argument
&& errno
== EROFS
&& stat(path
, &st
) == 0 &&
990 (i
->type
== CREATE_FILE
|| st
.st_size
== 0))
993 return log_error_errno(r
, "Failed to create file %s: %m", path
);
997 _cleanup_free_
char *unescaped
= NULL
, *replaced
= NULL
;
999 log_debug("%s to \"%s\".", i
->type
== CREATE_FILE
? "Appending" : "Writing", path
);
1001 r
= cunescape(i
->argument
, 0, &unescaped
);
1003 return log_error_errno(r
, "Failed to unescape parameter to write: %s", i
->argument
);
1005 r
= specifier_printf(unescaped
, specifier_table
, NULL
, &replaced
);
1007 return log_error_errno(r
, "Failed to replace specifiers in parameter to write '%s': %m", unescaped
);
1009 r
= loop_write(fd
, replaced
, strlen(replaced
), false);
1011 return log_error_errno(r
, "Failed to write file \"%s\": %m", path
);
1013 log_debug("\"%s\" has been created.", path
);
1015 fd
= safe_close(fd
);
1017 if (stat(path
, &st
) < 0)
1018 return log_error_errno(errno
, "stat(%s) failed: %m", path
);
1021 if (!S_ISREG(st
.st_mode
)) {
1022 log_error("%s is not a file.", path
);
1026 r
= path_set_perms(i
, path
);
1033 typedef int (*action_t
)(Item
*, const char *);
1035 static int item_do_children(Item
*i
, const char *path
, action_t action
) {
1036 _cleanup_closedir_
DIR *d
;
1042 /* This returns the first error we run into, but nevertheless
1045 d
= opendir_nomod(path
);
1047 return errno
== ENOENT
|| errno
== ENOTDIR
? 0 : -errno
;
1050 _cleanup_free_
char *p
= NULL
;
1057 if (errno
!= 0 && r
== 0)
1063 if (STR_IN_SET(de
->d_name
, ".", ".."))
1066 p
= strjoin(path
, "/", de
->d_name
, NULL
);
1071 if (q
< 0 && q
!= -ENOENT
&& r
== 0)
1074 if (IN_SET(de
->d_type
, DT_UNKNOWN
, DT_DIR
)) {
1075 q
= item_do_children(i
, p
, action
);
1076 if (q
< 0 && r
== 0)
1084 static int glob_item(Item
*i
, action_t action
, bool recursive
) {
1085 _cleanup_globfree_ glob_t g
= {
1086 .gl_closedir
= (void (*)(void *)) closedir
,
1087 .gl_readdir
= (struct dirent
*(*)(void *)) readdir
,
1088 .gl_opendir
= (void *(*)(const char *)) opendir_nomod
,
1096 k
= glob(i
->path
, GLOB_NOSORT
|GLOB_BRACE
|GLOB_ALTDIRFUNC
, NULL
, &g
);
1097 if (k
!= 0 && k
!= GLOB_NOMATCH
)
1098 return log_error_errno(errno
?: EIO
, "glob(%s) failed: %m", i
->path
);
1100 STRV_FOREACH(fn
, g
.gl_pathv
) {
1102 if (k
< 0 && r
== 0)
1106 k
= item_do_children(i
, *fn
, action
);
1107 if (k
< 0 && r
== 0)
1120 _CREATION_MODE_INVALID
= -1
1123 static const char *creation_mode_verb_table
[_CREATION_MODE_MAX
] = {
1124 [CREATION_NORMAL
] = "Created",
1125 [CREATION_EXISTING
] = "Found existing",
1126 [CREATION_FORCE
] = "Created replacement",
1129 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb
, CreationMode
);
1131 static int create_item(Item
*i
) {
1132 _cleanup_free_
char *resolved
= NULL
;
1135 CreationMode creation
;
1139 log_debug("Running create action for entry %c %s", (char) i
->type
, i
->path
);
1144 case IGNORE_DIRECTORY_PATH
:
1146 case RECURSIVE_REMOVE_PATH
:
1151 r
= write_one_file(i
, i
->path
);
1157 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1159 return log_error_errno(r
, "Failed to substitute specifiers in copy source %s: %m", i
->argument
);
1161 log_debug("Copying tree \"%s\" to \"%s\".", resolved
, i
->path
);
1162 r
= copy_tree(resolved
, i
->path
, false);
1164 if (r
== -EROFS
&& stat(i
->path
, &st
) == 0)
1171 return log_error_errno(r
, "Failed to copy files to %s: %m", i
->path
);
1173 if (stat(resolved
, &a
) < 0)
1174 return log_error_errno(errno
, "stat(%s) failed: %m", resolved
);
1176 if (stat(i
->path
, &b
) < 0)
1177 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1179 if ((a
.st_mode
^ b
.st_mode
) & S_IFMT
) {
1180 log_debug("Can't copy to %s, file exists already and is of different type", i
->path
);
1185 r
= path_set_perms(i
, i
->path
);
1192 r
= glob_item(i
, write_one_file
, false);
1198 case CREATE_DIRECTORY
:
1199 case TRUNCATE_DIRECTORY
:
1200 case CREATE_SUBVOLUME
:
1202 RUN_WITH_UMASK(0000)
1203 mkdir_parents_label(i
->path
, 0755);
1205 if (i
->type
== CREATE_SUBVOLUME
)
1206 RUN_WITH_UMASK((~i
->mode
) & 0777) {
1207 r
= btrfs_subvol_make(i
->path
);
1208 log_debug_errno(r
, "Creating subvolume \"%s\": %m", i
->path
);
1213 if (IN_SET(i
->type
, CREATE_DIRECTORY
, TRUNCATE_DIRECTORY
) || r
== -ENOTTY
)
1214 RUN_WITH_UMASK(0000)
1215 r
= mkdir_label(i
->path
, i
->mode
);
1220 if (r
!= -EEXIST
&& r
!= -EROFS
)
1221 return log_error_errno(r
, "Failed to create directory or subvolume \"%s\": %m", i
->path
);
1223 k
= is_dir(i
->path
, false);
1224 if (k
== -ENOENT
&& r
== -EROFS
)
1225 return log_error_errno(r
, "%s does not exist and cannot be created as the file system is read-only.", i
->path
);
1227 return log_error_errno(k
, "Failed to check if %s exists: %m", i
->path
);
1229 log_warning("\"%s\" already exists and is not a directory.", i
->path
);
1233 creation
= CREATION_EXISTING
;
1235 creation
= CREATION_NORMAL
;
1237 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1239 r
= path_set_perms(i
, i
->path
);
1247 RUN_WITH_UMASK(0000) {
1248 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1249 r
= mkfifo(i
->path
, i
->mode
);
1250 mac_selinux_create_file_clear();
1254 if (errno
!= EEXIST
)
1255 return log_error_errno(errno
, "Failed to create fifo %s: %m", i
->path
);
1257 if (lstat(i
->path
, &st
) < 0)
1258 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1260 if (!S_ISFIFO(st
.st_mode
)) {
1263 RUN_WITH_UMASK(0000) {
1264 mac_selinux_create_file_prepare(i
->path
, S_IFIFO
);
1265 r
= mkfifo_atomic(i
->path
, i
->mode
);
1266 mac_selinux_create_file_clear();
1270 return log_error_errno(r
, "Failed to create fifo %s: %m", i
->path
);
1271 creation
= CREATION_FORCE
;
1273 log_warning("\"%s\" already exists and is not a fifo.", i
->path
);
1277 creation
= CREATION_EXISTING
;
1279 creation
= CREATION_NORMAL
;
1280 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1282 r
= path_set_perms(i
, i
->path
);
1289 case CREATE_SYMLINK
: {
1290 r
= specifier_printf(i
->argument
, specifier_table
, NULL
, &resolved
);
1292 return log_error_errno(r
, "Failed to substitute specifiers in symlink target %s: %m", i
->argument
);
1294 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1295 r
= symlink(resolved
, i
->path
);
1296 mac_selinux_create_file_clear();
1299 _cleanup_free_
char *x
= NULL
;
1301 if (errno
!= EEXIST
)
1302 return log_error_errno(errno
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1304 r
= readlink_malloc(i
->path
, &x
);
1305 if (r
< 0 || !streq(resolved
, x
)) {
1308 mac_selinux_create_file_prepare(i
->path
, S_IFLNK
);
1309 r
= symlink_atomic(resolved
, i
->path
);
1310 mac_selinux_create_file_clear();
1313 return log_error_errno(r
, "symlink(%s, %s) failed: %m", resolved
, i
->path
);
1315 creation
= CREATION_FORCE
;
1317 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i
->path
);
1321 creation
= CREATION_EXISTING
;
1324 creation
= CREATION_NORMAL
;
1325 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation
), i
->path
);
1329 case CREATE_BLOCK_DEVICE
:
1330 case CREATE_CHAR_DEVICE
: {
1333 if (have_effective_cap(CAP_MKNOD
) == 0) {
1334 /* In a container we lack CAP_MKNOD. We
1335 shouldn't attempt to create the device node in
1336 that case to avoid noise, and we don't support
1337 virtualized devices in containers anyway. */
1339 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i
->path
);
1343 file_type
= i
->type
== CREATE_BLOCK_DEVICE
? S_IFBLK
: S_IFCHR
;
1345 RUN_WITH_UMASK(0000) {
1346 mac_selinux_create_file_prepare(i
->path
, file_type
);
1347 r
= mknod(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1348 mac_selinux_create_file_clear();
1352 if (errno
== EPERM
) {
1353 log_debug("We lack permissions, possibly because of cgroup configuration; "
1354 "skipping creation of device node %s.", i
->path
);
1358 if (errno
!= EEXIST
)
1359 return log_error_errno(errno
, "Failed to create device node %s: %m", i
->path
);
1361 if (lstat(i
->path
, &st
) < 0)
1362 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1364 if ((st
.st_mode
& S_IFMT
) != file_type
) {
1368 RUN_WITH_UMASK(0000) {
1369 mac_selinux_create_file_prepare(i
->path
, file_type
);
1370 r
= mknod_atomic(i
->path
, i
->mode
| file_type
, i
->major_minor
);
1371 mac_selinux_create_file_clear();
1375 return log_error_errno(r
, "Failed to create device node \"%s\": %m", i
->path
);
1376 creation
= CREATION_FORCE
;
1378 log_debug("%s is not a device node.", i
->path
);
1382 creation
= CREATION_EXISTING
;
1384 creation
= CREATION_NORMAL
;
1386 log_debug("%s %s device node \"%s\" %u:%u.",
1387 creation_mode_verb_to_string(creation
),
1388 i
->type
== CREATE_BLOCK_DEVICE
? "block" : "char",
1389 i
->path
, major(i
->mode
), minor(i
->mode
));
1391 r
= path_set_perms(i
, i
->path
);
1400 r
= glob_item(i
, path_set_perms
, false);
1405 case RECURSIVE_RELABEL_PATH
:
1406 r
= glob_item(i
, path_set_perms
, true);
1412 r
= glob_item(i
, path_set_xattrs
, false);
1417 case RECURSIVE_SET_XATTR
:
1418 r
= glob_item(i
, path_set_xattrs
, true);
1424 r
= glob_item(i
, path_set_acls
, false);
1429 case RECURSIVE_SET_ACL
:
1430 r
= glob_item(i
, path_set_acls
, true);
1436 r
= glob_item(i
, path_set_attribute
, false);
1441 case RECURSIVE_SET_ATTRIBUTE
:
1442 r
= glob_item(i
, path_set_attribute
, true);
1451 static int remove_item_instance(Item
*i
, const char *instance
) {
1459 if (remove(instance
) < 0 && errno
!= ENOENT
)
1460 return log_error_errno(errno
, "rm(%s): %m", instance
);
1464 case TRUNCATE_DIRECTORY
:
1465 case RECURSIVE_REMOVE_PATH
:
1466 /* FIXME: we probably should use dir_cleanup() here
1467 * instead of rm_rf() so that 'x' is honoured. */
1468 log_debug("rm -rf \"%s\"", instance
);
1469 r
= rm_rf(instance
, (i
->type
== RECURSIVE_REMOVE_PATH
? REMOVE_ROOT
|REMOVE_SUBVOLUME
: 0) | REMOVE_PHYSICAL
);
1470 if (r
< 0 && r
!= -ENOENT
)
1471 return log_error_errno(r
, "rm_rf(%s): %m", instance
);
1476 assert_not_reached("wut?");
1482 static int remove_item(Item
*i
) {
1487 log_debug("Running remove action for entry %c %s", (char) i
->type
, i
->path
);
1493 case CREATE_DIRECTORY
:
1494 case CREATE_SUBVOLUME
:
1496 case CREATE_SYMLINK
:
1497 case CREATE_CHAR_DEVICE
:
1498 case CREATE_BLOCK_DEVICE
:
1500 case IGNORE_DIRECTORY_PATH
:
1503 case RECURSIVE_RELABEL_PATH
:
1507 case RECURSIVE_SET_XATTR
:
1509 case RECURSIVE_SET_ACL
:
1511 case RECURSIVE_SET_ATTRIBUTE
:
1515 case TRUNCATE_DIRECTORY
:
1516 case RECURSIVE_REMOVE_PATH
:
1517 r
= glob_item(i
, remove_item_instance
, false);
1524 static int clean_item_instance(Item
*i
, const char* instance
) {
1525 _cleanup_closedir_
DIR *d
= NULL
;
1529 char timestamp
[FORMAT_TIMESTAMP_MAX
];
1536 n
= now(CLOCK_REALTIME
);
1540 cutoff
= n
- i
->age
;
1542 d
= opendir_nomod(instance
);
1544 if (errno
== ENOENT
|| errno
== ENOTDIR
) {
1545 log_debug_errno(errno
, "Directory \"%s\": %m", instance
);
1549 log_error_errno(errno
, "Failed to open directory %s: %m", instance
);
1553 if (fstat(dirfd(d
), &s
) < 0)
1554 return log_error_errno(errno
, "stat(%s) failed: %m", i
->path
);
1556 if (!S_ISDIR(s
.st_mode
)) {
1557 log_error("%s is not a directory.", i
->path
);
1561 if (fstatat(dirfd(d
), "..", &ps
, AT_SYMLINK_NOFOLLOW
) != 0)
1562 return log_error_errno(errno
, "stat(%s/..) failed: %m", i
->path
);
1564 mountpoint
= s
.st_dev
!= ps
.st_dev
||
1565 (s
.st_dev
== ps
.st_dev
&& s
.st_ino
== ps
.st_ino
);
1567 log_debug("Cleanup threshold for %s \"%s\" is %s",
1568 mountpoint
? "mount point" : "directory",
1570 format_timestamp_us(timestamp
, sizeof(timestamp
), cutoff
));
1572 return dir_cleanup(i
, instance
, d
, &s
, cutoff
, s
.st_dev
, mountpoint
,
1573 MAX_DEPTH
, i
->keep_first_level
);
1576 static int clean_item(Item
*i
) {
1581 log_debug("Running clean action for entry %c %s", (char) i
->type
, i
->path
);
1584 case CREATE_DIRECTORY
:
1585 case CREATE_SUBVOLUME
:
1586 case TRUNCATE_DIRECTORY
:
1589 clean_item_instance(i
, i
->path
);
1591 case IGNORE_DIRECTORY_PATH
:
1592 r
= glob_item(i
, clean_item_instance
, false);
1601 static int process_item_array(ItemArray
*array
);
1603 static int process_item(Item
*i
) {
1605 _cleanup_free_
char *prefix
= NULL
;
1614 prefix
= malloc(strlen(i
->path
) + 1);
1618 PATH_FOREACH_PREFIX(prefix
, i
->path
) {
1621 j
= ordered_hashmap_get(items
, prefix
);
1625 s
= process_item_array(j
);
1626 if (s
< 0 && t
== 0)
1631 r
= arg_create
? create_item(i
) : 0;
1632 q
= arg_remove
? remove_item(i
) : 0;
1633 p
= arg_clean
? clean_item(i
) : 0;
1641 static int process_item_array(ItemArray
*array
) {
1647 for (n
= 0; n
< array
->count
; n
++) {
1648 k
= process_item(array
->items
+ n
);
1649 if (k
< 0 && r
== 0)
1656 static void item_free_contents(Item
*i
) {
1660 strv_free(i
->xattrs
);
1663 acl_free(i
->acl_access
);
1664 acl_free(i
->acl_default
);
1668 static void item_array_free(ItemArray
*a
) {
1674 for (n
= 0; n
< a
->count
; n
++)
1675 item_free_contents(a
->items
+ n
);
1680 static int item_compare(const void *a
, const void *b
) {
1681 const Item
*x
= a
, *y
= b
;
1683 /* Make sure that the ownership taking item is put first, so
1684 * that we first create the node, and then can adjust it */
1686 if (takes_ownership(x
->type
) && !takes_ownership(y
->type
))
1688 if (!takes_ownership(x
->type
) && takes_ownership(y
->type
))
1691 return (int) x
->type
- (int) y
->type
;
1694 static bool item_compatible(Item
*a
, Item
*b
) {
1697 assert(streq(a
->path
, b
->path
));
1699 if (takes_ownership(a
->type
) && takes_ownership(b
->type
))
1700 /* check if the items are the same */
1701 return streq_ptr(a
->argument
, b
->argument
) &&
1703 a
->uid_set
== b
->uid_set
&&
1706 a
->gid_set
== b
->gid_set
&&
1709 a
->mode_set
== b
->mode_set
&&
1710 a
->mode
== b
->mode
&&
1712 a
->age_set
== b
->age_set
&&
1715 a
->mask_perms
== b
->mask_perms
&&
1717 a
->keep_first_level
== b
->keep_first_level
&&
1719 a
->major_minor
== b
->major_minor
;
1724 static bool should_include_path(const char *path
) {
1727 STRV_FOREACH(prefix
, arg_exclude_prefixes
)
1728 if (path_startswith(path
, *prefix
)) {
1729 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1734 STRV_FOREACH(prefix
, arg_include_prefixes
)
1735 if (path_startswith(path
, *prefix
)) {
1736 log_debug("Entry \"%s\" matches include prefix \"%s\".", path
, *prefix
);
1740 /* no matches, so we should include this path only if we
1741 * have no whitelist at all */
1742 if (strv_length(arg_include_prefixes
) == 0)
1745 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path
);
1749 static int parse_line(const char *fname
, unsigned line
, const char *buffer
) {
1751 _cleanup_free_
char *action
= NULL
, *mode
= NULL
, *user
= NULL
, *group
= NULL
, *age
= NULL
, *path
= NULL
;
1752 _cleanup_(item_free_contents
) Item i
= {};
1753 ItemArray
*existing
;
1756 bool force
= false, boot
= false;
1762 r
= unquote_many_words(
1773 return log_error_errno(r
, "[%s:%u] Failed to parse line: %m", fname
, line
);
1775 log_error("[%s:%u] Syntax error.", fname
, line
);
1779 if (!isempty(buffer
) && !streq(buffer
, "-")) {
1780 i
.argument
= strdup(buffer
);
1785 if (isempty(action
)) {
1786 log_error("[%s:%u] Command too short '%s'.", fname
, line
, action
);
1790 for (pos
= 1; action
[pos
]; pos
++) {
1791 if (action
[pos
] == '!' && !boot
)
1793 else if (action
[pos
] == '+' && !force
)
1796 log_error("[%s:%u] Unknown modifiers in command '%s'",
1797 fname
, line
, action
);
1802 if (boot
&& !arg_boot
) {
1803 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1811 r
= specifier_printf(path
, specifier_table
, NULL
, &i
.path
);
1813 log_error("[%s:%u] Failed to replace specifiers: %s", fname
, line
, path
);
1819 case CREATE_DIRECTORY
:
1820 case CREATE_SUBVOLUME
:
1821 case TRUNCATE_DIRECTORY
:
1824 case IGNORE_DIRECTORY_PATH
:
1826 case RECURSIVE_REMOVE_PATH
:
1829 case RECURSIVE_RELABEL_PATH
:
1831 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname
, line
, i
.type
);
1839 case CREATE_SYMLINK
:
1841 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1849 log_error("[%s:%u] Write file requires argument.", fname
, line
);
1856 i
.argument
= strappend("/usr/share/factory/", i
.path
);
1859 } else if (!path_is_absolute(i
.argument
)) {
1860 log_error("[%s:%u] Source path is not absolute.", fname
, line
);
1864 path_kill_slashes(i
.argument
);
1867 case CREATE_CHAR_DEVICE
:
1868 case CREATE_BLOCK_DEVICE
: {
1869 unsigned major
, minor
;
1872 log_error("[%s:%u] Device file requires argument.", fname
, line
);
1876 if (sscanf(i
.argument
, "%u:%u", &major
, &minor
) != 2) {
1877 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname
, line
, i
.argument
);
1881 i
.major_minor
= makedev(major
, minor
);
1886 case RECURSIVE_SET_XATTR
:
1888 log_error("[%s:%u] Set extended attribute requires argument.", fname
, line
);
1891 r
= parse_xattrs_from_arg(&i
);
1897 case RECURSIVE_SET_ACL
:
1899 log_error("[%s:%u] Set ACLs requires argument.", fname
, line
);
1902 r
= parse_acls_from_arg(&i
);
1908 case RECURSIVE_SET_ATTRIBUTE
:
1910 log_error("[%s:%u] Set file attribute requires argument.", fname
, line
);
1913 r
= parse_attribute_from_arg(&i
);
1919 log_error("[%s:%u] Unknown command type '%c'.", fname
, line
, (char) i
.type
);
1923 if (!path_is_absolute(i
.path
)) {
1924 log_error("[%s:%u] Path '%s' not absolute.", fname
, line
, i
.path
);
1928 path_kill_slashes(i
.path
);
1930 if (!should_include_path(i
.path
))
1936 p
= prefix_root(arg_root
, i
.path
);
1944 if (!isempty(user
) && !streq(user
, "-")) {
1945 const char *u
= user
;
1947 r
= get_user_creds(&u
, &i
.uid
, NULL
, NULL
, NULL
);
1949 log_error("[%s:%u] Unknown user '%s'.", fname
, line
, user
);
1956 if (!isempty(group
) && !streq(group
, "-")) {
1957 const char *g
= group
;
1959 r
= get_group_creds(&g
, &i
.gid
);
1961 log_error("[%s:%u] Unknown group '%s'.", fname
, line
, group
);
1968 if (!isempty(mode
) && !streq(mode
, "-")) {
1969 const char *mm
= mode
;
1973 i
.mask_perms
= true;
1977 if (parse_mode(mm
, &m
) < 0) {
1978 log_error("[%s:%u] Invalid mode '%s'.", fname
, line
, mode
);
1985 i
.mode
= IN_SET(i
.type
, CREATE_DIRECTORY
, CREATE_SUBVOLUME
, TRUNCATE_DIRECTORY
)
1988 if (!isempty(age
) && !streq(age
, "-")) {
1989 const char *a
= age
;
1992 i
.keep_first_level
= true;
1996 if (parse_sec(a
, &i
.age
) < 0) {
1997 log_error("[%s:%u] Invalid age '%s'.", fname
, line
, age
);
2004 h
= needs_glob(i
.type
) ? globs
: items
;
2006 existing
= ordered_hashmap_get(h
, i
.path
);
2010 for (n
= 0; n
< existing
->count
; n
++) {
2011 if (!item_compatible(existing
->items
+ n
, &i
)) {
2012 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2013 fname
, line
, i
.path
);
2018 existing
= new0(ItemArray
, 1);
2019 r
= ordered_hashmap_put(h
, i
.path
, existing
);
2024 if (!GREEDY_REALLOC(existing
->items
, existing
->size
, existing
->count
+ 1))
2027 memcpy(existing
->items
+ existing
->count
++, &i
, sizeof(i
));
2029 /* Sort item array, to enforce stable ordering of application */
2030 qsort_safe(existing
->items
, existing
->count
, sizeof(Item
), item_compare
);
2036 static void help(void) {
2037 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2038 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2039 " -h --help Show this help\n"
2040 " --version Show package version\n"
2041 " --create Create marked files/directories\n"
2042 " --clean Clean up marked directories\n"
2043 " --remove Remove marked files/directories\n"
2044 " --boot Execute actions only safe at boot\n"
2045 " --prefix=PATH Only apply rules with the specified prefix\n"
2046 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2047 " --root=PATH Operate on an alternate filesystem root\n",
2048 program_invocation_short_name
);
2051 static int parse_argv(int argc
, char *argv
[]) {
2054 ARG_VERSION
= 0x100,
2064 static const struct option options
[] = {
2065 { "help", no_argument
, NULL
, 'h' },
2066 { "version", no_argument
, NULL
, ARG_VERSION
},
2067 { "create", no_argument
, NULL
, ARG_CREATE
},
2068 { "clean", no_argument
, NULL
, ARG_CLEAN
},
2069 { "remove", no_argument
, NULL
, ARG_REMOVE
},
2070 { "boot", no_argument
, NULL
, ARG_BOOT
},
2071 { "prefix", required_argument
, NULL
, ARG_PREFIX
},
2072 { "exclude-prefix", required_argument
, NULL
, ARG_EXCLUDE_PREFIX
},
2073 { "root", required_argument
, NULL
, ARG_ROOT
},
2082 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0)
2091 puts(PACKAGE_STRING
);
2092 puts(SYSTEMD_FEATURES
);
2112 if (strv_push(&arg_include_prefixes
, optarg
) < 0)
2116 case ARG_EXCLUDE_PREFIX
:
2117 if (strv_push(&arg_exclude_prefixes
, optarg
) < 0)
2123 arg_root
= path_make_absolute_cwd(optarg
);
2127 path_kill_slashes(arg_root
);
2134 assert_not_reached("Unhandled option");
2137 if (!arg_clean
&& !arg_create
&& !arg_remove
) {
2138 log_error("You need to specify at least one of --clean, --create or --remove.");
2145 static int read_config_file(const char *fn
, bool ignore_enoent
) {
2146 _cleanup_fclose_
FILE *f
= NULL
;
2147 char line
[LINE_MAX
];
2155 r
= search_and_fopen_nulstr(fn
, "re", arg_root
, conf_file_dirs
, &f
);
2157 if (ignore_enoent
&& r
== -ENOENT
) {
2158 log_debug_errno(r
, "Failed to open \"%s\": %m", fn
);
2162 return log_error_errno(r
, "Failed to open '%s', ignoring: %m", fn
);
2164 log_debug("Reading config file \"%s\".", fn
);
2166 FOREACH_LINE(line
, f
, break) {
2173 if (*l
== '#' || *l
== 0)
2176 k
= parse_line(fn
, v
, l
);
2177 if (k
< 0 && r
== 0)
2181 /* we have to determine age parameter for each entry of type X */
2182 ORDERED_HASHMAP_FOREACH(i
, globs
, iterator
) {
2184 Item
*j
, *candidate_item
= NULL
;
2186 if (i
->type
!= IGNORE_DIRECTORY_PATH
)
2189 ORDERED_HASHMAP_FOREACH(j
, items
, iter
) {
2190 if (j
->type
!= CREATE_DIRECTORY
&& j
->type
!= TRUNCATE_DIRECTORY
&& j
->type
!= CREATE_SUBVOLUME
)
2193 if (path_equal(j
->path
, i
->path
)) {
2198 if ((!candidate_item
&& path_startswith(i
->path
, j
->path
)) ||
2199 (candidate_item
&& path_startswith(j
->path
, candidate_item
->path
) && (fnmatch(i
->path
, j
->path
, FNM_PATHNAME
| FNM_PERIOD
) == 0)))
2203 if (candidate_item
&& candidate_item
->age_set
) {
2204 i
->age
= candidate_item
->age
;
2210 log_error_errno(errno
, "Failed to read from file %s: %m", fn
);
2218 int main(int argc
, char *argv
[]) {
2223 r
= parse_argv(argc
, argv
);
2227 log_set_target(LOG_TARGET_AUTO
);
2228 log_parse_environment();
2233 mac_selinux_init(NULL
);
2235 items
= ordered_hashmap_new(&string_hash_ops
);
2236 globs
= ordered_hashmap_new(&string_hash_ops
);
2238 if (!items
|| !globs
) {
2245 if (optind
< argc
) {
2248 for (j
= optind
; j
< argc
; j
++) {
2249 k
= read_config_file(argv
[j
], false);
2250 if (k
< 0 && r
== 0)
2255 _cleanup_strv_free_
char **files
= NULL
;
2258 r
= conf_files_list_nulstr(&files
, ".conf", arg_root
, conf_file_dirs
);
2260 log_error_errno(r
, "Failed to enumerate tmpfiles.d files: %m");
2264 STRV_FOREACH(f
, files
) {
2265 k
= read_config_file(*f
, true);
2266 if (k
< 0 && r
== 0)
2271 /* The non-globbing ones usually create things, hence we apply
2273 ORDERED_HASHMAP_FOREACH(a
, items
, iterator
) {
2274 k
= process_item_array(a
);
2275 if (k
< 0 && r
== 0)
2279 /* The globbing ones usually alter things, hence we apply them
2281 ORDERED_HASHMAP_FOREACH(a
, globs
, iterator
) {
2282 k
= process_item_array(a
);
2283 if (k
< 0 && r
== 0)
2288 while ((a
= ordered_hashmap_steal_first(items
)))
2291 while ((a
= ordered_hashmap_steal_first(globs
)))
2294 ordered_hashmap_free(items
);
2295 ordered_hashmap_free(globs
);
2297 free(arg_include_prefixes
);
2298 free(arg_exclude_prefixes
);
2301 set_free_free(unix_sockets
);
2303 mac_selinux_finish();
2305 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;